Why do we have fireman fitting fire alarms in the place i live?
It sounds like a problem with your TMJ ( Templar Mandibular Joint ) that hinges your jaw to your skull. This joint is one of the most common sources of complaint, mostly with younger people, under 30 years of age. Treatment is not easy, and being aware of it, and eating slowly, and carefully is about the most that you can do, on your own. A maxial-facial specialist can try a appliance that fits in your mouth, that keeps the joint aligned, but the results are mixed, at best. Jim B Toronto.
Steam can indeed make a smoke detector go off, especially if the batteries are low, or the thing needs cleaning out. Try wiping off the dust from inside it.
No, because your chest isn't the only place negative energies can get in. The only way that would work is if your whole body was mirrorized.